123111141 has 4 divisors (see below), whose sum is σ = 164148192. Its totient is φ = 82074092.

The previous prime is 123111113. The next prime is 123111167. The reversal of 123111141 is 141111321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123111141 - 2¹⁴ = 123094757 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123111141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123111041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20518521 + ... + 20518526.

It is an arithmetic number, because the mean of its divisors is an integer number (41037048).

Almost surely, 2^123111141 is an apocalyptic number.

It is an amenable number.

123111141 is a deficient number, since it is larger than the sum of its proper divisors (41037051).

123111141 is an equidigital number, since it uses as much as digits as its factorization.

123111141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41037050.

The product of its digits is 24, while the sum is 15.

The square root of 123111141 is about 11095.5459982824. The cubic root of 123111141 is about 497.4687282853.

Adding to 123111141 its reverse (141111321), we get a palindrome (264222462).

The spelling of 123111141 in words is "one hundred twenty-three million, one hundred eleven thousand, one hundred forty-one".